Miter-box.



J. G. GRAHAM.

MITEB. BOX. PPPP IOATION FILED JULY 10, 1911 1,013,;010. Patented De0.26, 1911.

UNITED STATES PATENT QFFICE.

JOHN C. GRAHAM,

SPECIALTY 00.,

OF LAKE PROVIDENCE, LOUISIANA, ASSIG-NOR TO ENGINE ROOM OF LAKE PROVIDENCE, LOUISIANA.

MITER-BOX.

Application filed July 10, 1911.

Specification of Letters Patent.

To all whom it may concern:

Be it known that I, JOHN G. GRAHAM, a citizen of the United States, residing at Lake Providence, in the parish of East Carroll and State of Louisiana, have invented new and useful Improvements in Miter- Boxes, of which the following is a specification.

The present invention relates to improvements in miter-boxes, and it comprehends a device of the class specified designed primarily for cutting miters on the ends of strips of packing material, its essential features cbmprising a sliding gage which is carried by the rear wall or back of the box and which constitutes a stop for one end of the strip, and a follower bar arranged par allel with said back for holding or clamping said strip thereagainst. The aforesaid gage is provided with a beveled working face which forms with the adjacent face of the box back an angle equal to that of the miter to be out, while the follower above referred to is equipped with guide members engaged with the bottom wall of the box for maintaining the follower parallel with said back during its movements.

A structural embodiment of the invention is illustrated in the accompanying drawing, wherein Figure 1 is a perspective view of the improved miter-box; Fig. 2 is a plan view of the same, showing the strip in place therein; Figs. 3 and 1 are transverse vertical sections taken, respectively, on the lines 3-3 and 4:-'4: of Fig. 1; and Fig. 5 is a perspective detail view of the gage.

The box proper, as shown in said drawing, comprises essentially a bottom member 7 and a rear wall or back 8, the latter memher being marked with registering scales along its top edge and the upper portion of its front or inner face. Toward its right-hand edge, said back is formed with a vertical kerf 9, which ali'nes with a similar kerf 10 formed in an upstanding flange 11 located upon the adjacent end of the box bottom 7 at the front edge thereof. These kerfs unite in forming a guide for the saw or other cutting implement, the angle at which the plane of said guide intersects the said back being that of the miter to be cut, as will be understood. The aforesaid back 8 carries a gage 12- which is adjustable longitudinally thereof and is held in position by a looped spring tongue 13, said tongue straddling said back and having one of its legs arranged to bear against the rear face of the same and its other leg secured in a seat formed in the rear face of the gage. The side face of said gage which is opposite the above-mentioned saw-guide is beveled at the same angle as that of the miter, or, in other words, the angle which that face forms with back 8 is the same as that at which the saw-guide is arranged. In its preferred form, herein shown, said gage consists of a block having the cross sectional shape of an isosceles triangle, the'base of which has a length equal to one of the main divisions of the scales indicated on the box back.

Upon the box bottom 7 rests a flat follower bar 14 arranged parallel with the back 8 and adapted to be moved bodily toward and from the same, means being provided for maintaining the follower in such position during its movements; in the construction illustrated, the said follower is furnished at its lower edge, at suitable intervals, with lateral projections 15, here shown as in the form of pins, which are slidably fitted in transverse recesses 16 formed in the box bottom, these recesses opening at their rear ends through the rear edge of said bottom.

In the operation of the device, one end of the strip of packing, (indicated by the numeral 17 in Fig. 2), is inserted in the box and cut at the required angle. The strip is then advanced until its mitered end 18 contacts with the beveled working face of the gage, the latter having been previously moved to the proper point on back 8 to conform to the length of the section to be severed. The follower 14: is next moved to- Serial No. 637,756. a:

ward said back so as to engage the adjacent in combination, connected back and bottom members, the back member having a kerf formed in it and the bottom member having a serles of transverse grooves formed in its upper face; a vertical flange located upon the front edge of said bottom member in parallel relation to said back member and formed with a kerf alining with the firstnamed kerf; and a follower supported upon said bottom member between and in parallel relation to said flange and said back memher and movable bodily toward the latter to clamp a strip of material thereagainst, said follower being provided upon its lower edge with lateral pins slidable in said grooves for maintaining it in such relation during its movements.

2. A miter-box of U-section comprising, in combination, connected back and bottom members, the back member having a kerf formed in it and the bottom member having a series of transverse grooves formed in its upper face; a vertical flange located upon the front edge of said bottom member in parallel relation to said back member and formed with a kerfalining with the firstnamed kerf; an adjustable gage slidably mounted on said back member and having a beveled working face disposed at the same angle as said kerfs; and a follower supported upon said bottom member between and in parallel relation to said flange and said formed in it; a vertical flange located upon the front edge of said bottom member in parallel'relation to said back member and formed with a kerf alining with the firstnamed kerf; an adjustable gage slidably mounted on said back member and having a beveled working face disposed at the same angle as said kerfs; and a follower supported upon said bottom member between and in parallel relation to said flange and said back member and movable bodily toward the latter to clamp a strip of material thereagainst, with one end of the strip in contact with the beveled face of said gage.

In testimony whereof I have hereunto set my hand in presence of two subscribing wit nesses.

JOHN C. GRAHAM. Witnesses:

ALFRED O. EGELLY, W. H. MOORE.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G. 

